law hmac_md5_split

bend-osdev-crypto@0.1.0.0 · LAWS.bend:1301

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-crypto@0.1.0.0/hmac.bend as Hm
import bend-osdev-hashes@0.1.0.0/hashes.bend as Hs
import bend-osdev-hashes@0.1.0.0/md5.bend as HM5

1301# HMAC over MD5 (hashes): the tag in pieces is the tag in one call, for every split
1302law hmac_md5_split:
1303  for +kk: Hm.CrHmacKey
1304  for +a: B.Octets
1305  for +b: B.Octets
1306  {Hm.CrHmac.finish(~Hs.HsMdState<Hs.HsW4>, ~HM5.HsMd5.init(), ~HM5.HsMd5.update, ~HM5.HsMd5.final, Hm.CrHmac.update(~Hs.HsMdState<Hs.HsW4>, ~HM5.HsMd5.update, Hm.CrHmac.update(~Hs.HsMdState<Hs.HsW4>, ~HM5.HsMd5.update, Hm.CrHmac.start(~Hs.HsMdState<Hs.HsW4>, ~HM5.HsMd5.init(), ~HM5.HsMd5.update, kk), a), b)) == Hm.CrHmac.mac(~HM5.HsMd5.digest, kk, B.Octets.append(a, b)) : B.Octets}